radeon/llvm: Add R600ExpandSpecialInstrs pass

This pass expends reduction instructions into a MachineInstrBundle that
contains 4 instruction, one for each instruction slot.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/gallium/drivers/radeon/AMDGPUTargetMachine.cpp b/src/gallium/drivers/radeon/AMDGPUTargetMachine.cpp
index b97c0febfc4..6f15430bd53 100644
--- a/src/gallium/drivers/radeon/AMDGPUTargetMachine.cpp
+++ b/src/gallium/drivers/radeon/AMDGPUTargetMachine.cpp
@@ -158,6 +158,12 @@ bool AMDGPUPassConfig::addPreEmitPass() {
   PM->add(createAMDGPUCFGPreparationPass(*TM));
   PM->add(createAMDGPUCFGStructurizerPass(*TM));
 
+  const AMDGPUSubtarget &ST = TM->getSubtarget<AMDGPUSubtarget>();
+  if (ST.device()->getGeneration() <= AMDGPUDeviceInfo::HD6XXX) {
+    PM->add(createR600ExpandSpecialInstrsPass(*TM));
+    addPass(FinalizeMachineBundlesID);
+  }
+
   return false;
 }